51742636250 has 20 divisors (see below), whose sum is σ = 96986399730. Its totient is φ = 20697054000.

The previous prime is 51742636243. The next prime is 51742636271. The reversal of 51742636250 is 5263624715.

It can be written as a sum of positive squares in 5 ways, for example, as 13227769 + 51729408481 = 3637^2 + 227441^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51742636198 and 51742636207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20695805 + ... + 20698304.

Almost surely, 2^51742636250 is an apocalyptic number.

51742636250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51742636250 is a deficient number, since it is larger than the sum of its proper divisors (45243763480).

51742636250 is an equidigital number, since it uses as much as digits as its factorization.

51742636250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41394131 (or 41394116 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 51742636250 in words is "fifty-one billion, seven hundred forty-two million, six hundred thirty-six thousand, two hundred fifty".